Double compartment sleeping bag with built in mattress



Sept# 19, 1967 w. s. WHITMAN 3,341,869

DOUBLE COMPARTMENT SLEEPING BAG WITH BUILT IN MATTRESS Filed Oct. 22,1965 @Troie/vers United States Patent O 3,341,869 DOUBLE COMPARTMENTSLEEPING BAG WITH BUILT IN MATTRESS Willard S. Whitman, St. Louis, Mo.,assignor to H.

Wenzel Tent & Duck Co., St. Louis, Mo., a corporation of Missouri FiledOct. 22, 1965, Ser. No. 501,886 3 Claims. (Cl. 5-343) ABSTRACT F THEDISCLOSURE A reversible sleeping bag for use in warm or cold weatherusable by simply turning the sleeping bag over for selective use. Amattress is attached to lthe bag in an intermediate position between acold weather insulation cover and warm weather insulation with separatesleeping compartments on both sides of the mattress between the mattresand the appropriate cover. In use the appropriate bottom cover providesadditional ground insulation and resiliency for the user.

In the past various types of sleeping bags have been provided which are`adaptable for hot or cold weather, and which use liners or inserts toaccomplish this purpose. Further, sleeping bags have been provided withdetachable mattresses or the like to provide a soft layer upon which tosleep. Such `sleeping ybags require tting together the parts which canbe kept separately yand require keeping these parts straight. Further,these sleeping bags are somewhat bulky due to the provision of severaldifferent types of component parts.

By means of this invention there has been provided a reversible sleepingbag which is integral in structure and which can be used for either warmor cold weather by simply Iturning the bag to one side or the other. Afoam mattress is built into the sleeping bag between a warm weathercovering and a cold weather covering. The warm weather covering useslight insulation and provides a sleeping compartment between the warmweather covering and the mattress, while on the opposite side a coldweather covering is employed of quite a bit heavier insulation, which,for purpose of example, may be three times as heavy. Likewise, asleeping compartment is provided between the cold weather covering andthe mattress, and the user can choose the sleeping compartment dependentupon the weather prevailing. This sleeping bag is very simplyconstructed through lthe use of the light insulation warm weathercovering and the heavy insulation cold weather covering between whichthe foamed mattress is sandwiched. Further, the covering that is notybeing employed underlies the foam mattress and provides an extra degreeof resiliency so that it serves a triple function as an underlyingcovering; a mattress reinforcement; and additional insulation on thebottom while sleeping either in the warm weather compartment or the coldweather compartment.

The sleeping bag is very simply used without the requirement of `anyinteriitting of parts, and, therefore, simplicity is achieved throughits construction. It is rugged and relatively inexpensive in cost. Thetwo compartments and the foam mattress `are used commonly in thisinvention.

The above features are objects of this invention and further objectswill appear in the detailed description which follows and will beotherwise yapparent to those skilled in the art.

For the purpose of illustration of this invention, there is shown in theaccompanying drawings a preferred embodiment. It is to be understoodthat these drawings, however, are for the purpose of illustration `onlyand that the invention is not limited thereto.

In the drawings:

FIGURE 1 is a pictorial view of the sleeping bag;

FIGURE 2 is a view similar to FIGURE l but showing the top warm weather'compartment opened to present the sleeping bag ready for use, Ialsoshowing in dotted lines the cold weather compartment which would beready for use if so desired upon turning the sleeping bag bottomside up;

FIGURE 3 is an enlarged view in section taken on the line 3-3 of FIGUREl showing the construction of the top warm weather layer, the foamrubber mattress, and the bottom cold weather layer; and

FIGURE 4 is 'a view in section taken similarly to FIG- URE 3 but showingthe sleeping -bag reversed with the cold weather covering presented foruse.

Referring n-ow to the drawings, the sleeping bag is generally indicatedby the yreference numeral 10. As shown in FIGURES 2, 3 and 4, it iscomprised of a top warm weather compartment 12, an intermediate mattress14, and a bottom cold weather compartment 16. A zipper 18 closestogether the coverings of the sleeping bag when not in use,

'or when the user is occupying it.

As more fully shown in FIGURE 3, the warm weather compart-ment is bondedby the mattress and a warm weather -cover comprised of insulation Z0,which is of light weight construction. This insulation may be of anydesired type, as will be well understood in the art. The warm weatherinsulation 20 is covered by the outer fabric covering 22 land insidelining 24. It is noted that the bottom of the sleeping bag, as shown inFIGURE 3, has the warm weather and cold weather covers extending beyondthe mattress, which provides for a space for stitching and also providesoverlying protection for the feet of the user.

The mattress 14 is comprised of foam rubber, or other type of resilientmattress material, which is overlaid by a lining 26 and a lining 28. Thecold weather compartment 16 is bounded by the mattress and a coldweather cover comprised of heavy weight cold weather insulation 30covered by an outer fabric covering 32 and inside lining 34.

The outer covering and inside lining covering the warm weatherinsulation and the outer covering and inside lining covering the coldweather insulation are stitched together by turning them backwardsagainst the extension of the linings beyond the mattress 14. Thisstitching is indicated through three rows of stitchings bearing thereference numeral 36. This stitching extends from the bottom or" the bagalong the side of the bag opposite the Zipper.

USE

The user of the sleeping bag can very simply employ the sleeping bag forany desired use for cold or warm weather. The bag is shown prepared forwarm weather use in FIGURE 2, where the zipper 18 has been partiallywithdrawn to pull back the warm weather cover. The bag is then ready foruse by the user who crawls into warm weather compartment defined betweenthe warm weather cover and the mattress 14. In this position themattress is reinforced by the cold weather covering 16, which underliesit and provides additional mattress protection, and insulation.

The mattress member 14, which is built into the sleeping bag, serves toprovide a unitary weather protection element and mattress combination.The mattress member, with the stitching connecting the warm weathercovering and the cold weather covering, eliminates any necessity ofinserting and blowing up a -conventional air mattress, or inserting anyother type of mattress, while insuring that the proper positionalrelationship is provided in the reversible sleeping bag of thisinvention, since there are no parts that need be connected or buttonedor inserted inside one another.

Should the weather turn cold, or the user desires more insulationprotection, the sleeping bag is very simply turned over to the positionshown in FIGURE 4. In this position the cold weather covering 16overlies the mattress and the user will use the compartment denedbetween the cold weather covering and the mattress member 14. Here alsothe insulation covering not being employed serves to re-enforce themattress to provide additional mattress protection, and insulation andwarmth, because in this position the warm weather covering will underliethe mattress.

Various changes and modications may be made in this invention which willbe readily apparent to those skilled in the art. Such changes andmodifications are within the scope and teaching of this invention asdened by the claims appended hereto.

What is claimed is:

1. A reversible sleeping bag for selective use in warm weather and coldweather, said bag having a warm weather insulation cover on one side ofthe bag and a cold weather insulation cover on an opposite side of thebag, a mattress attached to the bag in an intermediate position betweenthe warm weather and cold weather covers to define separate sleepingcompartments on either side of the mattress, said bag being reversiblesuch that each of the aforementioned covers can be selectively employedwith the cover in the bottom position also providing additionalinsulation and resiliency for the human body.

2. The sleeping bag of claim 1 in which each of the warm weather andcold weather covers are protected by inner linings and outer fabriccoverings which are connected at the bottom of the sleeping bag to amattress lining, said mattress lining covering the mattress attached tothe bag in an intermediate position between the warm weather` and coldweather covers to define separate sleeping compartments on either sideof the mattress.

3. The sleeping bag of claim 2 in which the warm weather and coldweather covers extend beyond the bottom of the mattress to define aspace between said covers for the lining connections.

References Cited UNITED STATES PATENTS 1,323,610 12/1919 Price 5-3432,064,458 12/1936 Bulpit et al 5-343 2,918,683 12/1959 Kaplan 5-3433,284,818 1l/l966 Lutz 5-343 FOREIGN PATENTS 22,850 11/1914 GreatBritain.

BOBBY R. GAY, Primary Examiner.

A. CALVERT, Assistant Examiner.

1. A REVERSIBLE SLEEPING BAG FOR SELECTIVE USE IN WARM WEATHER AND COLDWEATHER, SAID BAG HAVING A WARM WEATHER INSULATION COVER ON ONE SIDE OFTHE BAG AND A COLD WEATHER INSULATION COVER ON AN OPPOSITE SIDE OF THEBAG, A MATTRESS ATTACHED TO THE BAG IN AN INTERMEDIATE POSITION BETWEENTHE WARM WEATHER AND COLD WEATHER COVERS TO DEFINE SEPARATE SLEEPINGCOMPARTMENTS ON EITHER SIDE OF THE MATTRESS, SAID BAG BEING REVERSIBLESUCH THAT EACH OF THE AFOREMENTIONED COVERS CAN BE SELECTIVELY EMPLOYEDWITH THE COVER IN THE BOTTOM POSITION ALSO PROVIDING ADDITIONALINSULATION AND RESILIENCY FOR THE HUMAN BODY.